AOD-9604 UK — hGH Fragment 176-191 Research Guide
Also known as hGH fragment 176-191
AOD-9604 is a synthetic fragment of human growth hormone corresponding to residues 176–191, the C-terminal region of the molecule. It is studied specifically because it isolates part of the growth hormone sequence without carrying the full hormone's activity.
This page explains what the fragment is, what the published research covers, and the two-stage reconstitution AOD-9604 requires.
For in vitro research use only — not for human or animal consumption. Not a licensed medicine in the UK. Nothing on this page is medical advice.
What is AOD-9604?
Growth hormone is a 191-amino-acid protein. AOD-9604 reproduces only the final 16 residues, with a tyrosine added for stability. That fragment is associated in research with lipid metabolism but does not act on the growth hormone receptor in the way the intact hormone does.
Because it is a fragment rather than a secretagogue, AOD-9604 does not stimulate endogenous growth hormone release — which is what distinguishes it from Ipamorelin, CJC-1295 or Tesamorelin.
What the published research reports
Preclinical work has examined the fragment's association with lipolysis and adipose tissue metabolism, and human trial data exists from earlier development programmes. Results across studies are mixed and it is not a licensed medicine in the UK.
It is supplied strictly for in vitro research use only. Nothing here is medical advice.
Reconstitution — two-stage method
AOD-9604 is one of the peptides that does not dissolve reliably in bacteriostatic water alone. Add 0.5ml of acetic acid water first and swirl gently until fully dissolved, then add 2.5ml of bacteriostatic water. Never shake at any stage.
Store the reconstituted vial at 2–8°C and use within 28 days. Ipamorelin and Tesamorelin follow the same two-stage method.
- Step 1 — add 0.5ml acetic acid water, swirl until dissolved
- Step 2 — add 2.5ml bacteriostatic water
- Never shake — swirl only
- Refrigerate at 2–8°C, use within 28 days
Buying this peptide in the UK
- UK-held stock — same working day dispatch on orders before 2pm, Mon–Fri.
- Royal Mail Tracked 24 with photo confirmation on every parcel.
- Independent HPLC and mass-spec testing with a batch-matched Certificate of Analysis.
- Discreet plain packaging and normal UK card checkout — no crypto required.
- Free 4 needles + 4 alcohol swabs with every vial — opt in at checkout.
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View full shopFrequently asked questions
Why does AOD-9604 need acetic acid water?
The fragment does not go reliably into solution with bacteriostatic water alone. Adding 0.5ml of acetic acid water first dissolves it, after which 2.5ml of bacteriostatic water is added to bring it to working volume. Swirl gently at both stages — never shake.
Is AOD-9604 the same as growth hormone?
No. It reproduces only residues 176–191 of the 191-amino-acid growth hormone sequence and does not act as full growth hormone or as a secretagogue.
Is AOD-9604 legal in the UK?
AOD-9604 is legal to buy and possess in the UK for laboratory research purposes. It is not a licensed medicine in the UK, is not prescribed by the NHS, and is supplied strictly for in vitro research use only — not for human or animal consumption.
How is AOD-9604 reconstituted?
AOD-9604 is supplied lyophilised. Add bacteriostatic water slowly down the inside wall of the vial and swirl gently — never shake, as agitation can damage the peptide chain. Once dissolved, store at 2–8°C and use within 28 days. Use our free peptide calculator for exact volumes rather than following generic charts.
Do you supply a Certificate of Analysis for AOD-9604?
Yes. Every batch is independently HPLC and mass-spec tested and the batch number on the vial matches a published Certificate of Analysis, so purity can be verified before use.
How fast is UK delivery?
Stock is held in the UK. Orders placed before 2pm Monday–Friday are dispatched the same working day by Royal Mail Tracked 24 with photo confirmation, in discreet plain packaging with no product names on the outside.
Disclaimer: All products sold by Peptides UK 4U are for laboratory and research purposes only. They are not intended for human or animal consumption, diagnosis, treatment or prevention of any disease.